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參數(shù)資料
| 型號(hào)： | TEA0677 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Dual pre-amplifier and equalizer for reverse tape decks |
| 中文描述： | 雙前置放大器和均衡器反向磁帶機(jī) |
| 文件頁數(shù)： | 4/13頁 |
| 文件大小： | 147K |
| 代理商： | TEA0677 |
August 1993
4
Philips Semiconductors
Product specification
Dual pre-amplifier and equalizer for
reverse tape decks
TEA0677T
PINNING
SYMBOL
PIN
DESCRIPTION
OUTA
n.c.
n.c.
n.c.
n.c.
n.c.
EQA
EQFA
V
CC
INA1
1
2
3
4
5
6
7
8
9
10
output channel A
not connected
not connected
not connected
not connected
not connected
equalizing output channel A
equalizing input channel A
supply voltage
input channel A1 (forward or
reverse)
reference voltage
input channel A2 (reverse or
forward)
input channel B2 (reverse or
forward)
head switch input
input channel B1 (forward or
reverse)
ground
equalizing input channel B
equalizing output channel B
equalizing switch input
not connected
auxiliary current
not connected
not connected
output channel B
V
REF
INA2
11
12
INB2
13
HS
INB1
14
15
GND
EQFB
EQB
EQS
n.c.
ACUR
n.c.
n.c.
OUTB
16
17
18
19
20
21
22
23
24
Fig.2 Pin configuration.
FUNCTIONAL DESCRIPTION
Head switching
is achieved when pin 14 (HS) is
connected to GND via a 27 k
resistor (inputs INA2, INB2
active), or left open-circuit (inputs INA1, INB1 active).
The 10
μ
F capacitor at pin 14 sets the time constant for
smooth switching.
Time constant switching for equalization
(70
μ
s/120
μ
s) is achieved when pin 19 (EQS) is
connected to ground via an 18 k
resistor (120
μ
s) or left
open-circuit (70
μ
s).
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TEA0677T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual pre-amplifier and equalizer for reverse tape decks |
| TEA0678 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual Dolby* B-type noise reduction circuit, automatic music search, with differential outputs and mute |
| TEA0678T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Dual Dolby* B-type noise reduction circuit, automatic music search, with differential outputs and mute |
| TEA0679 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus controlled dual Dolby* B-type noise reduction circuit for playback applications |
| TEA0679T | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:I2C-bus controlled dual Dolby* B-type noise reduction circuit for playback applications |
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